package com.seejoke.script;

import javax.script.*;
import java.io.Reader;

/**
 * 全功能引擎类，支持Compilable和Invocable
 */
public class FullSupportScriptEngine implements ScriptEngine, Compilable, Invocable {

    ScriptEngine engine;

    public FullSupportScriptEngine(ScriptEngine engine) {
        this.engine = engine;
    }

    public FullSupportScriptEngine(String nameOrExtOrMime) {
        ScriptEngineManager manager = new ScriptEngineManager();
        this.engine = manager.getEngineByName(nameOrExtOrMime);
        if (null == this.engine) {
            manager.getEngineByExtension(nameOrExtOrMime);
        }
        if (null == this.engine) {
            manager.getEngineByMimeType(nameOrExtOrMime);
        }
        if (null == this.engine) {
            throw new NullPointerException("Script for [{}] not support !" + nameOrExtOrMime);
        }
    }

    @Override
    public Object invokeMethod(Object thiz, String name, Object... args) throws ScriptException, NoSuchMethodException {
        return ((Invocable) engine).invokeMethod(thiz, name, args);
    }

    @Override
    public Object invokeFunction(String name, Object... args) throws ScriptException, NoSuchMethodException {
        return ((Invocable) engine).invokeFunction(name, args);
    }

    @Override
    public <T> T getInterface(Class<T> clasz) {
        return ((Invocable) engine).getInterface(clasz);
    }

    @Override
    public <T> T getInterface(Object thiz, Class<T> clasz) {
        return ((Invocable) engine).getInterface(thiz, clasz);
    }

    //----------------------------------------------------------------------------------------------- Compilable
    @Override
    public CompiledScript compile(String script) throws ScriptException {
        return ((Compilable) engine).compile(script);
    }

    @Override
    public CompiledScript compile(Reader script) throws ScriptException {
        return ((Compilable) engine).compile(script);
    }

    @Override
    public Object eval(String script, ScriptContext context) throws ScriptException {
        return engine.eval(script, context);
    }

    @Override
    public Object eval(Reader reader, ScriptContext context) throws ScriptException {
        return engine.eval(reader, context);
    }

    @Override
    public Object eval(String script) throws ScriptException {
        return engine.eval(script);
    }

    @Override
    public Object eval(Reader reader) throws ScriptException {
        return engine.eval(reader);
    }

    @Override
    public Object eval(String script, Bindings n) throws ScriptException {
        return engine.eval(script, n);
    }

    @Override
    public Object eval(Reader reader, Bindings n) throws ScriptException {
        return engine.eval(reader, n);
    }

    @Override
    public void put(String key, Object value) {
        engine.put(key, value);
    }

    @Override
    public Object get(String key) {
        return engine.get(key);
    }

    @Override
    public Bindings getBindings(int scope) {
        return engine.getBindings(scope);
    }

    @Override
    public void setBindings(Bindings bindings, int scope) {
        engine.setBindings(bindings, scope);
    }

    @Override
    public Bindings createBindings() {
        return engine.createBindings();
    }

    @Override
    public ScriptContext getContext() {
        return engine.getContext();
    }

    @Override
    public void setContext(ScriptContext context) {
        engine.setContext(context);
    }

    @Override
    public ScriptEngineFactory getFactory() {
        return engine.getFactory();
    }
}